Barcode device

Abstract

Bar codes used for various applications. A bar code can be used for biometrics, or for computer data entry. A special bar code is described that has additional information, but can be read by other readers.

What is claimed is: 
     
         1 . A barcode scanning system comprising:
 a mobile device able to make a telephone call;   the mobile device having an electronic camera capable of capturing a two dimensional barcode and a display screen capable of displaying said barcode as an image viewable by a user of the mobile device,   said two dimensional barcode comprising a first value comprising an indication of a command and a second value comprising a first pointer directly addressing an Internet database entry of a database publically available on the Internet,   said mobile device able to decode the two dimensional barcode and access the first database entry using said command and the first pointer,   the first database entry comprising a uniform resource locator (URI) comprising a second pointer,   wherein the mobile device reading the two dimensional barcode can use the command and first pointer to address the first database entry and be directed to the location of the URL stored in the first database entry.